A heat pump works much the same way an air conditioning unit works with a few differences. In the cooling mode it transfers heat outside from the inside and in the heating mode it transfer heat from the outside to the inside*.
Union, Maine. Union is a town in Knox County, Maine, United States. The population was 2,259 at the 2010 census. It is home to the Matthews Museum of Maine Heritage and annual Union Fair.
Union County, North Carolina. Union County is a county located in the U.S. state of North Carolina. As of the 2010 census, the population was 201,292. Its county seat is Monroe. Union County is included in the Charlotte-Concord-Gastonia, NC-SC Metropolitan Statistical Area.